If two collinear vectors A and B are added, the resultant has a magnitude equal to 4.0. If B is subtracted from A , the resultant has a magnitude equal to 8.0. What is the magnitude of B?
If two collinear vectors A and B are added, the resultant has a magnitude equal to 4.0. If B is subtracted from A , the resultant has a magnitude equal to 8.0. What is the magnitude of B?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter1: Introduction And Vectors
Section: Chapter Questions
Problem 61P
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If two collinear vectors A and B are added, the resultant has a magnitude equal to 4.0. If B is subtracted from A , the resultant has a magnitude equal to 8.0. What is the magnitude of B?
Expert Solution
Step 1
Given, the resultant of the sum of two collinear vectors A and B has magnitude 4. It can be written as,
Since A and B are collinear, the magnitude of the sum of vectors is equal to the sum of the of the magnitudes of the individual vectors. Hence, we can write
Here, and are the magnitudes of vectors A and B respectively.
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